/*
* Create an HTTP 400 bad request response.
*/
public static FullHttpResponse badRequest(String msg) {
DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, BAD_REQUEST);
resp.content().writeBytes(msg.getBytes());
resp.headers().set(CONTENT_TYPE, "text/plain");
resp.headers().set(CONTENT_LENGTH, resp.content().readableBytes());
return resp;
}
/**
* Respond to errors occurring on a Reactor by redirecting them to the client via an HTTP 500
* error response.
*
* @param channel the channel on which to send an HTTP response
* @return a consumer to handle HTTP requests
*/
public static Consumer<Throwable> errorHandler(
NetChannel<FullHttpRequest, FullHttpResponse> channel) {
return ev -> {
DefaultFullHttpResponse resp =
new DefaultFullHttpResponse(
HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR);
resp.content().writeBytes(ev.getMessage().getBytes());
resp.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/plain");
resp.headers().set(HttpHeaders.Names.CONTENT_LENGTH, resp.content().readableBytes());
channel.send(resp);
};
}
/*
* Create an HTTP 200 response that contains the data of the thumbnailed image.
*/
public static FullHttpResponse serveImage(Path path) throws IOException {
DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, OK);
RandomAccessFile f = new RandomAccessFile(path.toString(), "r");
resp.headers().set(CONTENT_TYPE, "image/jpeg");
resp.headers().set(CONTENT_LENGTH, f.length());
byte[] bytes = Files.readAllBytes(path);
resp.content().writeBytes(bytes);
return resp;
}
/*
* Create an HTTP 301 redirect response.
*/
public static FullHttpResponse redirect() {
DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, MOVED_PERMANENTLY);
resp.headers().set(CONTENT_LENGTH, 0);
resp.headers().set(LOCATION, IMG_THUMBNAIL_URI);
return resp;
}